Fig. 1: Comparison of two cases PNV and two cases of PAT1/PCV. | Eye

Fig. 1: Comparison of two cases PNV and two cases of PAT1/PCV.

From: Optical coherence tomography-based misdiagnosis and morphological distinction in pachychoroid neovasculopathy vs. polypoidal choroidal vasculopathy

Fig. 1: Comparison of two cases PNV and two cases of PAT1/PCV.

In patients 1 and 2 with PNV, OCT (A + D) demonstrates a flat irregular PED (alternatively double layer sign) and subretinal fluid. Note that the flat irregular PED has a wide horizontal diameter (green horizontal arrow) and low height. Whereas FA (B + E) shows unspecific hyperfluorescence, ICG (C + F) shows a type 1 choroidal neovascularization without evidence of aneurysmal/polypoidal lesions. In patients 3 and 4 with PAT1/PCV, OCT (G + J) shows a peaking PED (red vertical arrow) with greater height having an adjacent double layer sign (diameter demonstrated with a green horizontal arrow). FA (H + K) shows a more focal hyperfluorescence, and ICG (I + L) clearly demonstrates the presence of aneurysms/polyps.

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